We include references to articles cataloging the causes of stair slips, trips, and falls and to building code specification details for proper. While there is some amount of crossover, interior stairs have their own code requirements. This document provides building photographs, and examples of defects found in inspecting indoor or outdoor stairs, railings, landings, treads, and related conditions for safety and proper construction. It should be noted that building codes and regulations for exterior stairs are not exactly the same as those for interior stairs. They can be styled in a variety of ways as long as they provide adequate space for a hand to grip them. Rails must be able to support a load of at least 200 pounds and must extend at minimum 12 inches horizontally past the riser nosing at the top of the stairs and at least equal to one tread depth horizontally at the bottom of the stairs. The associated railing height code states that these rails must be placed between 34 and 38 inches above the walking surface of the stairs. This applies to any staircase with two or more risers. While the finer details will ultimately be influenced by your local government's building regulations, the International Building Code, the International Residential Code and the standards set by the Americans with Disabilities Act of 1990 maintain that exterior stairs that are a required point of egress – in other words, stairs that must be crossed on your way in and out of the building – must have handrails.
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